It's called pest control 365 days of the year! Fleas, flys, feral cats, rabbits, pigeons, rats, mice and a host of other creatures termed 'pests' get controlled yearound, whether they've got young or not.
Could be farms, golf courses, race courses, sewage works, cricket pitches, someones house/garden or whatever, pests need controlling.
I partly get what you're saying, and yeah, no right thinking person deliberately sets out to kill young animals, but certain occasions demand it